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Date: Thu, 20 Oct 2011 14:34:07 +0200
From: Yves-Alexis Perez <>
Subject: Re: PR attack against XML Encryption

On jeu., 2011-10-20 at 12:58 +0200, Florian Weimer wrote:
> A German university has released a press release, alleging a
> vulnerability in the W3C XML Encryption standard.  Apparently, error
> reporting from existing implementations can be used as an oracle to
> recover information from messages encrypted in CBC mode.
> Details have not been published, as far as I know.  Does anybody know
> more? 

Paper was just presented at ACM CCS
( Proceedings are
available at

but afaict the paper is not (yet?) available freely.


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